Author Topic: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol  (Read 272307 times)

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Offline Wim13

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #585 on: February 16, 2013, 05:09:49 AM »
NOTE: This DS2072 display data  was Manually Created to test the  DSO measuring system.
so I can better understand .my first DSO.


NOTE that the system knows only 2GSa/s is used , so cannot measure under 0.5ns thus rise time is measured as  "rise<500ps"

NOTE the difference among Max, Top, and Amp  measurements.

This maybe helpful to others to understand this DSO

Strange item, the signal seems to be able to look in the future,
before the signal goes up, ther is a reverse ringing, how does the signal
knows that some nSec later it has to go up..?

Offline marmad

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #586 on: February 16, 2013, 10:19:26 AM »
One interesting thing I've learned while programming RUU is that the Rigol only displays 200 of the 256 possible ADC levels at any given time (mapped to the 8 vertical grid divisions) - even though the entire range is available via SCPI. My newest version of RUU (hopefully will post it tomorrow) has a 'Full ADC' switch - to allow seeing the full range.

Here is a clipped sine wave visible on the Rigol display:



And here is the same sine wave displayed in RUU (with 10 vertical divisions) at exactly the same time:


Offline dougg

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #587 on: February 17, 2013, 03:52:03 AM »
One interesting thing I've learned while programming RUU is that the Rigol only displays 200 of the 256 possible ADC levels at any given time (mapped to the 8 vertical grid divisions) - even though the entire range is available via SCPI. My newest version of RUU (hopefully will post it tomorrow) has a 'Full ADC' switch - to allow seeing the full range.

I own a Agilent DSO1024A scope which is made by Rigol. One frustrating thing when viewing a signal with a large dynamic range (amplitude) was that as soon as a peak jutted out of the viewing window (either the top or bottom) then all the measurements that were impacted suddenly became "*****". So a little "headroom" above and below the displayed window in which measurements could still be taken is a good thing IMO.

Offline Teneyes

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #588 on: February 17, 2013, 04:21:34 AM »
One interesting thing I've learned while programming RUU is that the Rigol only displays 200 of the 256 possible ADC levels at any given time (mapped to the 8 vertical grid divisions) - even though the entire range is available via SCPI. My newest version of RUU (hopefully will post it tomorrow) has a 'Full ADC' switch - to allow seeing the full range.
I own a Agilent DSO1024A scope which is made by Rigol. One frustrating thing when viewing a signal with a large dynamic range (amplitude) was that as soon as a peak jutted out of the viewing window (either the top or bottom) then all the measurements that were impacted suddenly became "*****". So a little "headroom" above and below the displayed window in which measurements could still be taken is a good thing IMO.
The Rigol DS2000 will still measure and display the measurements if >top+25%  and < bot-25% , and what Marmad is proposing is only in his RUU. data utility program that the Display be extended to show the complete waveform , Great Idea  :) :) :)

When part of the trace is outside the extended range the waveform should show clipped as the measurements affected will show ****.
IiIiIiIiIi  --  curiosity killed the cat but, satisfaction brought it back

Offline marmad

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #589 on: February 17, 2013, 04:58:50 AM »
I own a Agilent DSO1024A scope which is made by Rigol. One frustrating thing when viewing a signal with a large dynamic range (amplitude) was that as soon as a peak jutted out of the viewing window (either the top or bottom) then all the measurements that were impacted suddenly became "*****". So a little "headroom" above and below the displayed window in which measurements could still be taken is a good thing IMO.

Sure, on many low-end scopes the moment your waveform goes off the screen above or below, then all the measurements were inaccurate. So I'm guessing that's one of the reasons that they've done it.

Offline marmad

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #590 on: February 17, 2013, 05:25:08 AM »
Here is a 3D-plot of a frame array (RUU does this now ;) ) using the Rigol 8-division screen size - showing a square wave set to the boundaries of the screen. In the plot, each square represents two screen squares (i.e. 7 x 4 = 14 x 8 on the screen). Note the white streaks at the top - that is where the square is touching the screen top (and thus activating the white color in the CLUT):



Here is the same data plotted again - although this time using the full data set mapped to 10 divisions (7 x 5):


Offline zibadun

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REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #591 on: February 17, 2013, 06:39:37 AM »
Here is a 3D-plot of a frame array (RUU does this now ;) ) ]

Man what a great idea to present frames on a 3d plot! 

Offline marmad

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #592 on: February 17, 2013, 06:48:22 AM »
Man what a great idea to present frames on a 3d plot!

Thanks  :) - it's what I've been planning with RUU all along. But since the memory read bug, I had to devise a different scheme to get to my goal. Now the software can save, load, plot, and play 'frame arrays':



Here's a 2D plot of frames of a voltage-increasing sine wave - using a black body color lookup table:



Here's the same frames plotted in 3D using a 2-color gradient on the Y-axis (Edit: Note the frame order is reversed in this plot - increasing away from the front plane):

« Last Edit: February 17, 2013, 06:53:59 AM by marmad »

Offline Hydrawerk

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #593 on: February 17, 2013, 06:54:19 AM »
Although I do not fully understand the pictures, they are cool. You must be a skilled programmer.  :-+
Amazing machines. http://www.youtube.com/user/denha (It is not me...)

Online EV

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #594 on: February 17, 2013, 09:40:05 AM »
@marmad
Nice pictures!

Offline branadic

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #595 on: February 17, 2013, 09:51:13 AM »
Something I was wondering about after I have had a DS2202 for testing is:
They use the relabled LMH6518, why does Rigol not offer variable gain additional to the fixed vertical scale settings and for this reason the possibility to use the maximum of vertical resolution for any input signal? The LMH6518 has a gain step size of 2dB, which allows additional odd scales beside the standard historical 1 / 2 / 5 scaling.
Same functionallity is also available on my over 6 years old TDS5104B.

Offline scummos

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #596 on: February 17, 2013, 11:11:35 AM »
Do you mean fractional Volts/Div settings? You can get those by pushing, then rotating the Scale knob.

Offline branadic

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #597 on: February 17, 2013, 11:29:18 AM »
If you want to call it fractional.... in your case, is it a gain setting at the input amplifier or is it just zooming of already digitized data?

Offline marmad

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #598 on: February 17, 2013, 08:52:17 PM »
  Wow, great functionality and displays Marmad. :-+ :-+ :-+ :-+ :-+

Thanks, Teneyes.

Quote
Does that mean that the 3-D display function of RUU  can also display the extended data values up to FF hex, (+113.5%) and still detect and show the white streaks if value is = FF (hex) at the max?

Yes, the entire data set (0 - FFh) is saved in frame arrays and can always be plotted or played back with either 8 or 10 vertical divisions.

Offline Evi

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Re: REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
« Reply #599 on: February 17, 2013, 11:06:46 PM »
Hi, marmad
Could you, please, test Video Syncronization Mode. It became my painful point after frustrating with SDS7102:
http://owon.forumup.com/about153-owon.html


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